The Gear,spur, cataloged under National Stock Number 3020-00-050-6728, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-050-6728 |
| Primary Part Number | 1771214-2 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.251 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.620 INCHES FIRST END IN |
| Teeth Quantity | 126 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.325 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Mounting Hole Nominal Diameter | 0.112 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.4583 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.667 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.150 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1771214-2 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 106-125-2 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 1771214 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-00-050-6728 is a Gear,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-050-6728 has 2 manufacturer part numbers on file: 1771214-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 106-125-2 (Lockheed Martin Corporation Div Rms - Mitchel Field).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-214-6939. Verify interchangeability with system specifications before substitution.
Key specifications for 1771214-2: Bore Nominal Diameter: 0.251 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.620 INCHES FIRST END IN; Teeth Quantity: 126; Body Style: PLAIN, SOLID. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 3020-00-050-6728 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.